Split Lock Washers

A split lock washer helps keep a threaded fastener from backing out under vibration, which is a real concern on a running model where the engine or motor keeps everything buzzing. This category covers split lock washers and related flat washers in small SAE sizes.

Available Sizes

Du-Bro split lock washers are listed in #2, #4, #6, #8, and #10, matching the common small-screw sizes used throughout model hardware. The split ring bites against the nut and the surface as the joint is tightened, adding resistance to loosening. On a model that runs, this small step can spare you the frustration of tracking down a fastener that has vibrated its way loose in flight.

Standard #4 flat washers are also offered, useful for spreading load under a screw head or nut where a plain bearing surface is wanted, or for taking up a bit of gap on a slightly oversized hole.

Select the washer size that matches your hardware from the listings above.